I run a couple security sweeps on my computers daily and rarely run into any hits, except during those times following a session in which I visited SWC. I then find that over 100 'risks' show up. In contrast, I once spent 4 hours writing a paper for a class that involved my looking at Ebay, Yahoo Autos, numerous news sites, and many blogs, yet only had 4 of these risks come up afterwards.

Is it the Banner Exchange or people's avatars that make these security risks appear or what?